Casio G-Steel [GST-B1000D-2ADR]

Tough, innovative, functional beauty — reimagined in sharp, minimalist style.

The GST-B1000D carries on the G-SHOCK heritage of tough construction and design rooted in functional beauty, reconstructing this legacy to achieve a polished, sleek expression.

The bezel goes logo-free for a clean, modern look, while three separate finishes — vertical hairline, circular hairline, and mirror polishing — create a rich and sophisticated textural appeal that changes as light is reflected at different angles. The mirror- and hairline-finished solid stainless-steel band is paired with a tri-fold clasp also crafted from solid stainless steel. This sharp, flat design takes you from business meetings to casual settings to outdoor activities with ease.

We’ve incorporated details from the DW-5000C, the very first G-SHOCK, adding sporty touches like the original’s signature bezel shape and brick pattern. The GST-B1000D-1AJF features accent colors inspired by the first G-SHOCK: red symbolizing the passion to take on challenges, blue representing water resistance, and yellow signifying outstanding shock resistance.

This is a timepiece built to be tough. A metal bezel guards against impact, while the carbon-reinforced resin case protects the module. Urethane buffering components where the metal band meets the case absorb shock and reduce stress on the joints — enhancing durability and ensuring a more secure connection. Adhesive glass bonding and a compact module design make for a slimmer, lighter watch, without compromising shock resistance. All of this comes together in an exacting combination of comfort, toughness, and everyday usability.

Case size (L×W×H): 46.9 × 44.2 × 11.6 mm
Weight: 118 g
Case and bezel material: Bio-based Carbon / Stainless steel
Band: Solid stainless steel band, One-touch 3-fold Clasp
Construction: Shock Resistant, Carbon Core Guard structure
Water resistance: 200-meter water resistance

Power supply and battery life:

• Tough Solar (Solar powered)
  
• 5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
• 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)

Exterior:

• Glass: Mineral Glass
• Compatible band size: 150 to 205 mm
• Other: Neobrite
• Crown: Screw Lock Crown
  

Watch Features:

• Stopwatch:
  • 1 second stopwatch
  • Measuring capacity:
    • 29'59 (30 minutes) 
      
  • Measuring modes: Elapsed time
• Timer:
  • Countdown timer
  • Measuring unit: 1 second
  • Countdown range: 30 minutes
  • Countdown start time setting range: 1 minute to 30 minutes (1-minute increments)
• Alarm:
  • daily alarms 
    
• Time adjustment:
  • Bluetooth: Connects to a smartphone and automatically adjusts the time

Light:

• LED light
  • Super Illuminator, Afterglow
    
  • Light color: White

Calendar: Full auto-calendar (to year 2099)
Mute feature: Button operation tone on/off
Accuracy: ±15 seconds per month

Smartphone Link/App Connectivity Features

• Mobile link (Wireless linking using Bluetooth®)
  
• Apps: CASIO WATCHES
• Apps Feature
  • Auto time adjustment
  • Easy watch setting
  • Approximately 300 world time cities
  • Life log data
  • Stopwatch data transfer
  • App information
  • Time & place
  • Phone finder

Other features:

• 12/24-hour format
• Regular timekeeping:
  • Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 2 dials (24-hour, day)
• Day indicator
• Date display